libcruft-util/time_posix.cpp

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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2010-2016 Danny Robson <danny@nerdcruft.net>
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*/
#include "time.hpp"
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#include "cast.hpp"
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#include <ctime>
static constexpr uint64_t SECOND = 1'000'000'000UL;
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///////////////////////////////////////////////////////////////////////////////
void
util::sleep (uint64_t ns)
{
struct timespec req, rem;
req.tv_sec = util::cast::lossless<time_t> (ns / SECOND);
req.tv_nsec = util::cast::lossless<long > (ns % SECOND);
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while (nanosleep (&req, &rem)) {
req = rem;
}
}